Astronomers observing stars using a theodolite,able to measure both vertical and horizontal distances,and consulting Sanskrit texts on astronomy and trigonometry known as the Siddhantas | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / NYPL / Science Source |
Taille de l’image : | 3388 px × 3293 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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